package cn.itcast.bos.web.action.commen;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import org.apache.poi.ss.formula.functions.T;
import org.springframework.data.domain.Page;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;

public abstract class BaseAction<T> extends ActionSupport implements ModelDriven<T> {
    //模型驱动
    protected T model;
    protected int page;
    protected int rows;

    public void setPage(int page) {
        this.page = page;
    }

    public void setRows(int rows) {
        this.rows = rows;
    }

    @Override
    public T getModel() {
        return model;
    }
    public BaseAction(){
        //构造子类Action对象,获取继承父类型的泛型
        Type genericSuperclass = this.getClass().getGenericSuperclass();
        ParameterizedType parameterizedType=(ParameterizedType)genericSuperclass;
        Class<T> modelClass = (Class<T>) parameterizedType.getActualTypeArguments()[0];
        try {
            model= modelClass.newInstance();
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("模型构造失败...");
        }
    }
    //将分页查询结果压如值栈的方法
    protected void pushPageDataToValueStack(Page<T> pageData){
        Map<String,Object>result=new HashMap<>();
        result.put("total",pageData.getTotalElements());
        result.put("rows",pageData.getContent());
        ActionContext.getContext().getValueStack().push(result);
    }
}
